Numerical simulation on infrared radiation characteristics of vertical take-off and landing nozzle

被引：0

作者：

Zhao, Haiyu ^{[1
]}

Wang, Wei ^{[2
]}

Song, Jingyuan ^{[2
]}

Wang, Qingshan ^{[1
]}

机构：

[1] School of Mechanical and Electrical Engineering, Central South University, Changsha

[2] Shenyang Engine Research Institute, Aero Engine Corporation of China, Shenyang

来源：

Hangkong Dongli Xuebao/Journal of Aerospace Power | 2024年 / 39卷 / 11期

关键词：

exhaust system; infrared radiation; Malkmus statistical narrow band model; RMCM; vertical take-off and landing nozzle;

D O I：

10.13224/j.cnki.jasp.20220864

中图分类号：

学科分类号：

摘要：

In order to improve the infrared stealth and maneuverability of aircraft exhaust system，a multi-axis cascade rotary vertical take-off and landing nozzle was developed and proposed， and the infrared radiation characteristics of nozzles in conventional cruise， vertical takeoff and landing and intermediate form S stealth modes were studied parameterized by using Malkmus statistical narrow band model and the reverse Monte Carlo method (RMCM). The results showed that compared to the conventional cruise mode nozzle，the infrared radiation intensity of the vertical takeoff and landing mode nozzle was reduced by a maximum of 23% and the S stealth mode nozzle by a maximum of 47%. And the relative angles of the cabins had a significant effect on the infrared radiation characteristics of the S stealth mode nozzle，and the relative angles of the cabins near the exit had little effect on the infrared radiation characteristics of the nozzle in vertical takeoff and landing mode. © 2024 Beijing University of Aeronautics and Astronautics (BUAA). All rights reserved.

引用

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